Electromagnetism questions.

Find Electromagnetism university examination questions in acaproso.com

#	Question
1	How many electrons do we need to remove from an initially neutrall ball to give it a charge of 1 C? Short answers
2	Is the force between two charges ever zero? Give an example to support your answer. Short answers
3	A positive charge Q is to be divided into two positive charges q₁ and q₂. Show that for a separation distance D, the force exerted by one charge on the other is greatest if q₁=q2=Q/2. Short answers
4	A certain charge Q is to be divided into two parts (Q-q) and q. What is the relation of Q to q if the two parts, placed in a given distance apart, are to have a maximum Coulomb`s repulsion? Short answers
5	In charging an object by rubbing, how many electrons must be transfered to give an object a net charge of +10^-6 C? Must the electrons be added or taken away? Short answers
6	Two identical charges 10 cm apart exert an electrical force of 10N on each other. What is the magnitude of each of the two charges. Find the ratio of this charge to that of an electron Mathematical Calculation
7	Two point charges of $3mu C$ and $8mu C$ are separated by 0.2 m Find the force of repulsion between the two charges Calculate the electric field intensity at the position of the $3mu C$ due to $8mu C$ charge. Mathematical Calculation
8	Two charges q₁=2.0 pC and q₂=-2.0 pC are separated by 4 $mu m$ What is the dipole moment of the pair of charges? Sketch the pair and indicate the direction of the dipole moment. Mathematical Calculation

1. Information We Collect